题目

Police were sent out to keep the traffic ________ smoothly during the snowstorm. A. being runB. runC.to runD. running 答案：D下列有关我国夏、商、周三代兴亡的叙述不正确的是A．启建立了夏朝B．汤灭夏建立商朝C．周平王建立周朝，史称西周D．周武王建立周朝，史称西周